Scraper



April 6,1926. 1,579,566

G. W. PACKER SCRAPER Original Filed April 16. 1 923 Patented Apr.6,1926,

GZENN -W. PAGKER,v or, CHICAGO}; :ILLIINOIS ASSIGNOR 'ro aoongnmLMANUFAC'LUR- ING commun on c IcAGo,in pmolsge connoxm rox OELILLINOIS.

1 scrum-g Application filedA irill'16,A9253 serial flmfiiiggiifi kel lewc d sepicmb er252 1925.. i

' To all-whom it mag conca m:v

Be it known that wVn-Peq qsg zi ze of e fi n te w t te fi si ing-E t hife g i ,t rc'o itybf Q9012 in g wm qf 5 l inois! av infl med; rne p nen si 1 t i?@ .;'-9 i ing'is a specification;

This in :enti n {815 fi di imv m etsr in;

' scrapers used for transportingldosen gteg 1 rial and. more, pzrticularly to ,scrgpcrs, adapted to have ,reiciprocahle moyeme rt} Wardi and aw a-y mm, the vm a teria l gtq, transported. i V v i 1 y -P Applit on ari e cit ali.

Number, 410,771", fildfM aj 19;; 1e21,; 511% allowed Qon iFebriiiLry 2v1l23, a' :scr@per 0 theclassabove described is shown in W11 ,ch

s rilpe mpr esi b b rtiqflj a ii si two rear. cl s re mem rs. hingedipppgi.

site side walls thei'eo fl these 'hingedlmemhers.

' being. operetively c iIIQQ E Kl ,both f witl the head rope andg withthe tail repose as toibe, swung lat erally into open; position wherg-the scraper is moved .rezitwgrdly}; .aljd,ifclosegil when the scraperiszmovedl fqrwardlyg In; the rspecifie form disclosed, inrjthei prior ap-5 plication; the operative connectio n gbegweeri, the head rope and,phe v rtwo ,hiriged. real; Wall p t onsfi mpr ssfl P in irflfe ible ermend to a cross arm'on'the ,scraiper bodyptheii passes rearwardly about;a ,pul ley pair i'ied ion a closure member, and}- t hericefljfqr igirdlyb t? ui f he i 's rz-iv l wh h:

; the .elosure:memberfishinged; i

In rthe pr esc nt iniplfblfd 9f "r lil gdis cl osed irig h rpms nb applcat on; h iii h rope ,eterm ing ls l-islgcoimecte L closure andefizendsig} it across, the other itelt i i 011 the opposi te'gsidl 1' ec i ni-i zz m l ififi operation is afio mils, each of which is coiiriecltedgi tggits rear showing the lrear Wallv portions in closed 1Figgre a transyers e section "of :the I i h ll i iii W ll:

- iiif ri' pe mmprisi n a adl o eil' i I hes rep rr invli es -b dyp fioof scrgper'ihaving. no bottom but ga bottom provided without j de Ipzigrtig g frpili the fscopeeof my invention, The loyver. oftheisigieywalls are inf cutting "edges 16, 16 as dipfa te l gt 18 518'Tbgjbqttom mar ins. of

. fi onli n k-l e an {iii Oven p it n. i

no, N

ayi gf side Wells? 133F13 ;vveonnectedpby i tl eclosiireQmem be s, are'preferablyr inclined i or! tqrned inwgrdly so; as "(to form cutting 16;of, the side,,\v ;1;11s.,,, The ar'rangement is A I such that the"closiire fiiemk iersf normally he rear; i -bf iheis ip $1. i eralperdigging or gathering a load.

' tend forwardly in crossed relation with each other, LllG terminalpassing about a sheai'e or guide adjacent the forward end of the sinewall 13 while the other terminal passes about a similar sheave or guide25" on the side wall 18". These terminals 2S and 23 may be connected tothe. head rope 10 in any suitable manner as for iance in the form shownthey are integral and continuous, passing freely about a pulley 2-6connected with the head rope 10.

The tail rope 11 extends aetween the ends of the wall portions 17 and1'7 and is provided with a pair of terminals 30, connected to arms 81,31 extending inwardly from said wall portions. These arms are preferablyarranged adjacent the respective pivoted ends of the closures so thatwhen the latter. are in closed position, as shown in full lines inFigure 1, said arms project substantially at right angles to theirrespective connecting terminals 30, 30, thus affording a maximumleverage for opening the closures when the scraper is moved rearwardlyby the tail rope, and also tending to maintain the door in open positionwhile It will be further noted that the arms 31, 31 are arranged to formstops to limit the inward movement of the closure members 17* and 17",as for instance, said arms engage the downwardly extending portions 1515 of the cross bar 15 when their respective closures are closed, asshown in Figure 1. Means are also provided for limiting the outwardpivotal movement of the wall portions, for example, a pair of chains 35,35 may be connected between the cross bar 15 and the respective closuremembers.

The operation of the scraper above described is as follows: v

The apparatus is set up in the usual mannor for reciprocable movementbetween a pile of loose material and an unloading or discharge point.The tail rope 11 is trained over the pile and when tension is placedthereon the scraper is moved rearwardly with the closure members 17*,17* standing open in substantially parallel relation with each other soas to ofi'er a minimum'resistance as the scraper cuts into the materialat the toe of the pile. lVhen the scraper has been advanced sufficientlyto gathera load the pull on the tail rope 11 is discontinued and tensionis placed on the head rope 10. ()wing to the connection of the head ropeterminals 23"- and 23 to the wall portions 17 and 17", respectively, apull on the head rope tends to pivot the closure members inwardly andclose the rear end of the scraper, whereby the material in the scraperwill. be enclosed and moved forwardly.

In the preferred construction forming the subject matter of the presentinvention it will be seen that the crossed arrangement of the head ropeterminals 23 and 2S" intermediate the guides 25 and 25 and the clo suremembers to which they are. respectively connected, affordsa'construction in which the leverage tending to close the closuremembers is sufiicient' to operate the latter without the use of pulleysor the like, that is to say, the terminals are directly connected to theclosure members instead of passing around pulleys as was proposed in myprior application referred to. The arrangement forming the subjectmatter of the present invention therefore has the advantages ofsimplicity in construction and quick and positive operation, which havebeen shown to be desirable in a scraper of this character. Thearrangement of the arms 31, 81 to which the tail rope terminals 30, 30are connected is also such as to provide maximum leverage in opening andmaintaining the closure members in open position when tension is placedon the tail rope. These arms also form convenient stops to limit theinward movement of the closures.

Although I have shown and described on form in which my invention may beembodied, it will be understood that the construction and arrangement ofthe parts may be variedwithout departing from the spirit and scope of myinvention. I do not therefore wish to be understood as limiting my selfto the specific construction illustrated herein excepting asspecifically limited in the appended claims.

I claim as my invention: 1. A scraper having connected side walls, twomembers normally forming a closure movably mounted to extend rearwardlyin open position, and two draft devices having operative connectionwitlrsaid closure members and tending to move them in oppositedirections, one of said draft devices having two terminals eachextending about laterally spaced guides on the scraper and thence in lcrossed relation with the other to operative engagement with the closuremember on the opposite side of the scraper.

2. A scraper having connected side walls, two closure members eachpivotally connected with one of the side walls toopen laterally, twoflexible draft devices torreciprocably moving said scraper operativelyconnected with said pivoted closure mem er and end g t6 lea e them 111qpr t directions, one :ofsaid draft devices having two terminals eachextending about a spaced guide mounted'on one side wall, and thence-incrossed relation with the other terminal to operative engagement withthe closure member hinged to the opposite side wall. 7 1 v 3. A scraperhaving connected side walls, two members normally forming a closuremovably mounted to extend rearwardly in open position, and two draftdeviceshavmg operative connection with said closure mem bers and tendingto move them in opposite directions, one of said draft devices havingtwo terminals each extending about laterally spaced guides on thescraper thence and in crossed relation with the other to directengagement with the closure member on the opposite side of the scraper.

4-. A scraper having connected sidewalls, two closure members eachpivotally connected with one of the side walls to open laterally, eachof said members having'a projecting arm adjacent the pivoted connectionsthereof, said arm extending forwardly along the members, and'twoflexible draft devices r 1 2 -its adjacent side wall in closed positionof v for reciprocably moving said scraper operatively connected withsaid pivoted closure members and tending to move them in oppositedirections, one of said draft devices having a pair of terminalsdirectly connected to said inwardly pro ect1ng arms;

5. A scraper havmg connected side walls,

two closure members each pivotally connected with one of the side wallsto open laterally,-'feach of said members having a projecting armadjacent the pivoted connections thereof, said arm extending forwardlyalong its ad acent side wall n closed position of the members andforming a stopto limit the inward movement of said members, two flexibledraft devices for reciprocably moving sald scraper operatively connectedwith said pivoted closure'members and tending to Signed at, Chicago, inthe county of Cook and State; of lllinois, this 3rd day of April,

GLENN W. manna

